The last time I explored tide pools on the Boston Harbor Islands, I was taking Bruce Berman’s Snails to Whales class. We learned the geography of the Harbor, visited the islands, learned about the clean-up, and saw so many creatures I never knew existed in this area. We saw a few of those same creatures on Spectacle Island this past Monday.
Taking cover near a rock, this Asian shore crab (Hemigrapsus sanguineus) does its best to remain hidden. This non-native crab can be distinguished from others in our area by the three “teeth” it has running down each side of its shell. Other species have at least five.